Atzimba Carbajal stands in the center of her family and cheers as the Gay Pride Parade marches down Market Street on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Atzimba Carbajal stands in the center of her family and cheers as...

Atzimba Carbajal stands in the center of her family and cheers as... Photo-2069114.35926 - SFGate

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Al Valez flies his flag, which is 35 years old, as he marches in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Al Valez flies his flag, which is 35 years old, as he marches in...

Al Valez flies his flag, which is 35 years old, as he marches in... Photo-1904409.35926 - SFGate

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Mayor Gavin Newsom blows a kiss to the crowd as he walks in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Mayor Gavin Newsom blows a kiss to the crowd as he walks in the...

Mayor Gavin Newsom blows a kiss to the crowd as he walks in the... Photo-2069115.35926 - SFGate

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Hundreds of participants ride in Dykes on Bikes, which led the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Hundreds of participants ride in Dykes on Bikes, which led the 40th...

Hundreds of participants ride in Dykes on Bikes, which led the 40th... Photo-2069116.35926 - SFGate

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Ricardo Ochoa greets the crowd as he walks on stilts with the Mission Neighborhood Health Center in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Ricardo Ochoa greets the crowd as he walks on stilts with the...

Ricardo Ochoa greets the crowd as he walks on stilts with the... Photo-1914909.35926 - SFGate

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Brian Young of the the Gay Men's Chorus gets his butt patted by the crowd as he marches in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

Brian Young of the the Gay Men's Chorus gets his butt patted by the...

Brian Young of the the Gay Men's Chorus gets his butt patted... Photo-2069117.35926 - SFGate

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Navy Reserve Commander Zoe Dunning and her partner, Pam Grey, wave and photograph the thousands watching the 40th annual Gay Pride Parade on Sunday in San Francisco. Zoe made history when she came out as a lesbian and won her discharge case against the military.

District Attorney Kamala Harris waves to the crowd as she rides in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Photo: Lacy Atkins, The Chronicle

District Attorney Kamala Harris waves to the crowd as she rides in...

District Attorney Kamala Harris waves to the crowd as she rides in... Photo-2069120.35926 - SFGate

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Huckleberry Greenlee, left, kisses Jennifer Collins dressed as cartoon characters Robin and Batman as they march with the San Francisco Public Library in the 40th annual Gay Pride Parade on Sunday in San Francisco.

Christine Svendsen of the Monterey Chapter of the Dykes on Bikes checks her camera before the launch of the 40th annual Pride Parade on Sunday in San Francisco.

Photo: John Sebastian Russo, The Chronicle

Christine Svendsen of the Monterey Chapter of the Dykes on Bikes...

Christine Svendsen of the Monterey Chapter of the Dykes on Bikes... Photo-2069129.35926 - SFGate

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Christine Svendsen of the Monterey Chapter of the Dykes on Bikes directs newly arriving participants of the 40th annual Pride Parade to their rallying points on Market Street on Sunday in San Francisco.

Photo: John Sebastian Russo, The Chronicle

Christine Svendsen of the Monterey Chapter of the Dykes on Bikes...

Christine Svendsen of the Monterey Chapter of the Dykes on Bikes... Photo-2069130.35926 - SFGate

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Gail Tillotson of Santa Rosa checks her hair in the mirror of her motorcycle shortly before the Dykes on Bikes lead the way down Market Street during the 40th annual Pride Parade on Sunday in San Francisco.

Photo: John Sebastian Russo, The Chronicle

Gail Tillotson of Santa Rosa checks her hair in the mirror of her...

Gail Tillotson of Santa Rosa checks her hair in the mirror of her... Photo-2069131.35926 - SFGate

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Members of New Leaf Services of San Francisco ride down Market Street in a cable car during the 40th annual Pride Parade on Sunday in San Francisco.

Photo: John Sebastian Russo, The Chronicle

Members of New Leaf Services of San Francisco ride down Market...

Members of New Leaf Services of San Francisco ride down Market... Photo-2069132.35926 - SFGate

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Jennifer Rafiner from Martinez sits on her motorcycle waiting for the 40th annual Pride Parade to begin on Sunday in San Francisco.

Rashun Thompson, right, entertains as the crowd dances to the sounds of the "Global Village Stage" in the Castro District at the after party for the 18th annual San Francisco Dyke March from Dolores Park to the Castro.

Eriq Martin of San Francisco wore a mask he purchased at the North Beach Festival to join the celebration in the Castro District after the 18th Annual San Francisco Dyke March from Dolores Park to the Castro.

Photo: Kat Wade, Special To The Chronicle

Eriq Martin of San Francisco wore a mask he purchased at the North...

Eriq Martin of San Francisco wore a mask he purchased at the North... Photo-2069135.35926 - SFGate

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A crowd dances at the "Global Village Stage" in the Castro District at the after party for the 18th annual San Francisco Dyke March from Dolores Park to the Castro on Saturday.

Photo: Kat Wade, Special To The Chronicle

A crowd dances at the "Global Village Stage" in the Castro District...

A crowd dances at the "Global Village Stage" in the... Photo-2069136.35926 - SFGate

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From Left, Shelby Bentley and Kryslin Plotter of Santa Rosa dance in the street at the after party for the 18th annual San Francisco Dyke March from Dolores Park to the Castro on Saturday.

From left, Jessica Barnett of Detroit dances with Genevieve Henderson of Salinas in the streets of the Castro District at the after party early Sunday for Saturday's 18th Annual San Francisco Dyke March from Dolores Park to the Castro.

Lizzy Heald, left, watches Daniel Metzger entertain party-goers with twirling glow sticks at the after party early Sunday for Saturday's 18th Annual San Francisco Dyke March from Dolores Park to the Castro.

From left, Julie Torres of San Francisco, Leticia Rodriguez, of Livermore and Janet Guirola of San Francisco enjoy the celebration from the top of Dolores Park at the 18th annual Dyke March celebration in San Francisco on Saturday.

Marika Cifor of Oakland exposes her belly while Margaret Hasley of San Francisco gets help putting on sunscreen from "nurse" Sarai Coutin of Santa Monica at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Pat Rexrode, left, is part of one of the 18,000 legally married lesbian couples and is listed as "father" on the birth certificate of son Nicholas Rexrode-Schwarzkopf, 19 months. Nicholas and mom Genevieve Schwarzkopf snack on the lawn at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Photo: Kat Wade, Special To The Chronicle

Pat Rexrode, left, is part of one of the 18,000 legally married...

Pat Rexrode, left, is part of one of the 18,000 legally married... Photo-2069176.35926 - SFGate

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SIsters Edana Contreras, left, of San Francisco and Chris Contreras of Oregon enjoy the entertainment while Chris' son, Alex Contreras, snoozes at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Photo: Kat Wade, Special To The Chronicle

SIsters Edana Contreras, left, of San Francisco and Chris Contreras...

Ardy Tibby, left, sits in the disabled section with her partner of more than nine years, Jean Taylor, at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday. Tibby and Taylor traveled from Melbourne, Australia, to join marches in L.A. and San Francisco before heading to Ohio for a gathering of "Old Lesbians."

People play at acrobatics during the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Photo: Kat Wade, Special To The Chronicle

People play at acrobatics during the 18th annual Dyke March...

People play at acrobatics during the 18th annual Dyke March... Photo-2069179.35926 - SFGate

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A group of friends did a tribute to "Brideshead Revisited" and "The Royal Tenenbaums," bringing a full retro living room set to Dolores Park in San Francisco during the 18th annual Dyke March celebration Saturday.

Photo: Kat Wade, Special To The Chronicle

A group of friends did a tribute to "Brideshead Revisited" and "The...

A group of friends did a tribute to "Brideshead... Photo-2069180.35926 - SFGate

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A group of friends did a tribute to "Brideshead Revisited" and "The Royal Tenenbaums," bringing a full retro living room set to Dolores Park in San Francisco during the 18th Annual San Francisco Dyke March celebration.

Photo: Kat Wade, Special To The Chronicle

A group of friends did a tribute to "Brideshead Revisited" and "The...

A group of friends did a tribute to "Brideshead... Photo-2069181.35926 - SFGate

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A huge group sits in a wading pool at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Photo: Kat Wade, Special To The Chronicle

A huge group sits in a wading pool at the 18th annual Dyke March...

A huge group sits in a wading pool at the 18th annual Dyke March... Photo-2069182.35926 - SFGate

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Patty Overland, left, and Monique Davis are greeted at the 18th annual Dyke March celebration in Dolores Park in San Francisco on Saturday.

Edgar Diaz of the Go-Go Boys dances on stage in front of a crowd gathered to celebrate the Pride kick-off party at Civic Center Plaza on Saturday in San Francisco.

Photo: John Sebastian Russo, The Chronicle

Edgar Diaz of the Go-Go Boys dances on stage in front of a crowd...

Edgar Diaz of the Go-Go Boys dances on stage in front of a crowd... Photo-2069188.35926 - SFGate

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M.J. Paul of San Francisco straddles his bike during the Freedom Ride, a historical tour that stopped at Civic Center Plaza while the Pride kick-off party was taking place Saturday.

Photo: John Sebastian Russo, The Chronicle

M.J. Paul of San Francisco straddles his bike during the Freedom...

M.J. Paul of San Francisco straddles his bike during the Freedom... Photo-2069189.35926 - SFGate

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Volunteer Ron Fairley comes to the bottom of the hill to see the nearly finished pink triangle during its annual installation a hillside in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Photo: John Sebastian Russo, The Chronicle

Volunteer Ron Fairley comes to the bottom of the hill to see the...

Volunteer Ron Fairley comes to the bottom of the hill to see the... Photo-2069190.35926 - SFGate

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(left to right) Kimiko Barbour Stephan Handorf and Ron Podoske finish securing pink tarps to the hillside during the annual Pink Triangle installation on Christmas Tree Road in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Volunteer Sasha Harris-Cronin has fun flattening the brush and bushes underneath the pink triangle during its annual installation on a hillside in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Volunteers Kimiko Barbour (left) high-fives Ron Podoske for their efforts during the annual installation of the Pink Triangle installation on Christmas Tree Road in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Volunteer Craig Thompson of San Francisco drives a stake into the Twin Peaks hillside during the annual installation of the Pink Triangle on Christmas Tree Road on Saturday, June 26, 2010 in San Francisco, Calif.

Mayor Newsom signs the shirt of Pink Triangle Coordinator and Founder of Pink Triangle Patrick Carney during a brief appearance at the Pink Triangle installation on Christmas Tree Road in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Volunteers Tom Murray (left) and Kian Kuan work side by side driving stakes into the hillside during the Pink Triangle installation on Christmas Tree Road in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.

Mayor Newsom signs the shirt of volunteer Jennifer Lyson during a brief appearance at the Pink Triangle installation on Christmas Tree Road in Twin Peaks on Saturday, June 26, 2010 in San Francisco, Calif.